LOBLOLLY OR NORTH CAROLINA PINE. 



65 



TABLE 17. DIAMETER BREASTHIQH OUTSIDE THE BARK OF LOBLOLLY PINE AND THE CORRESPOND- 

 ING STUMP DIAMETER INSIDE THE BARK. 



Column 4, Table 18, shows the diameter growth of a pure stand in an 

 old field on soil quite similar to that on which the group 'in column 3 

 was growing, except that the soil was previously cultivated. The culmi- 

 nation in diameter took place at the end of the first decade, with a 

 growth for the decade of nearly 8 inches; but the subsequent decrease 

 in growth is so rapid, that between the fifth and sixth decades it is only 

 A of an inch. This manner of growth is characteristic of the dry old 

 fields. The rate. of diameter growth of trees on longleaf and pocoson 

 pine flat lands (column 3), like the height growth of these species on 

 the same site, is slow but persistent. As the trees stand well apart, the 

 crowns are well developed and the diameter growth is at a maximum for 

 this condition. 



